Agilent Technologies E4351B, E4350B service manual Signal Measurement and Conditions

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44

Test Point

 

Table 6-3. Test Points (continued)

Signal

 

Measurement and Conditions

The measurements at test points 26 through 39 were taken with full scale voltage

and full scale current programmed. The measurements were made first in the CV mode with no load and then in the CC mode with the load set for full-scale output voltage and current. If the CC annunciator is not on, set the current to a slightly lower value until it comes on.

TP26 D413

CC control (sheet 2)

1.57V in CV mode

cathode

 

0.15V in CC mode

TP27 R703

RmOUTB (sheet 2)

3.3mV in CV mode with no load

 

 

0.19V in CC mode with 8A load

TP28 U403-7

Imon (sheet 2)

0.9mV in CV mode with no load

 

 

4.39V in CC mode with 8A load

TP29 R430

Neg Imon(sheet 2)

13.9mV in CV mode

 

 

-3.9V in CC mode with 8A load

TP31 U407-7

CC* (sheet 2)

5V in CV mode

 

 

0V on CC mode

TP32 U408-7

CV control (sheet 2)

-0.8V in CV mode

 

 

1.55V in CC mode

TP33 U401-7

Vmon (sheet 2)

4.1V in CV or CC mode (@ full scale voltage output)

TP34 U407-12

CV*(sheet 2)

0V in CV mode

 

 

5V in CC mode

TP35 U408-3

CV or CC control (sheet 2)

0.5V in CV mode

 

 

0.98V in CC mode

TP36 D429

FET control (sheet 2)

0.05V in CV mode

anode

 

0.98V in CC mode

TP37 D419

Gross current limit circuit

14.5V in CV or CC mode

cathode

(sheet 2)

 

TP38 D425

DP Control (sheet 2)

0.22V in CV mode

cathode

 

1.9V in CC mode

TP39 R444

OV_Prog (sheet 2)

5.17V @ full scale OV programmed

TP40 R706

Fan_Prog (sheet 1)

0.5V approximate @ low speed

 

 

3.2V approximate @ medium speed (4A output)

 

 

5V approximate @ high speed (8A output)

TP41 R453

OC_Prog (sheet 2)

4.6V (turn-on default)

TP42 U405-5

OV circuit (sheet 2)

4.5V with full scale voltage programmed

 

 

0V with zero volts programmed

TP43 U405-7

OV circuit (sheet 2)

5V (no OV condition)

TP44 R510

Therm HS(sheet 2)

3.2V with heatsink @23C (voltage decreases as

 

 

temperature increases)

TP45 D430

OC circuit (sheet 2)

5V with no overcurrent condition

anode

 

 

TP46 D407

OC circuit (sheet 2)

0.45V with no overcurrent condition

cathode

 

2.3V in OC Protect

Service Addendum

Image 44
Contents Foreword Areas of DifferenceTable of Contents Firmware Revisions Test Equipment RequiredBasic Test Setup Measurement TechniquesVoltage and Current Values Transient Recovery TimeCC RMS Noise Measurement Test Setup Performance Test Record Load Effect Source Effect Pard Ripple & NoiseCurrent Sink 0.9A Readback Accuracy Pard Ripple & Noise Self-Test Error Codes/Messages Signature AnalysisOverall Troubleshooting sheet Overall Troubleshooting sheet 1Overall Troubleshooting sheet 2 Overall Troubleshooting sheet 3 Overall Troubleshooting sheet 4 Flow Charts OV & OCNo Display Troubleshooting No Display TroubleshootingOV Will Not Fire Troubleshooting OV Will Not Fire StartOV at Turn-On Troubleshooting OV at Turn-On StartOutput Held Low Troubleshooting sheet Output Held Low StartOutput Held Low Troubleshooting Sheet 2 Output Held High Troubleshooting Output Held High StartClear Screen Case Else Next Cable and Connector Locations 18. Cable and Connector Locations for E4350B/E4351BDSP Board Digital Signal Processor DSP Board Simplified Diagram of DSP Circuits DSPChassis -Mechanical Page Page Page Page Mosfet Page Page Page Page STUD-STD-PRS-IN Service Addendum FET Q303 1855-0849 FET Mechanical Test Points Signal Measurement and Conditions A4A1/A4A3 Left Tunnel Boards Figure Adapter Board and Phone Adapter Board Figures 6-11 A1 Main Board Assembly Diagram and Test Points for E4350B A1 Main Board Schematic Diagram for E4350B sheet 1 A1 Main Board Schematic Diagram for E4350B sheet 2 A1 Main Board Schematic Diagram for E4350B sheet 3 A1 Main Board Schematic Diagram for E4350B sheet 4 A4 Left Tunnel Circuit Component Locations for E4350B A4A1/A4A3 Left Tunnel Circuit Schematic Diagram for E4350B A4A2/A4A4 Right Tunnel Circuit Schematic Diagram for E4350B 10. A5 DSP Board Test Points 11. A6 Adapter Board Schematic Diagram

E4351B, E4350B specifications

Agilent Technologies, a leader in electronic measurement, offers a range of advanced solutions, including the E4350B and E4351B switching systems. These models are specifically designed to meet the increasing demands of modern testing environments, providing high reliability and precision for a variety of applications.

The Agilent E4350B is known for its low resistance switching capabilities, making it an ideal choice for applications requiring accurate and repeatable measurements. It supports up to 16 channels of low resistance testing, allowing engineers to simulate complex electrical paths and identify potential issues in circuit designs. With an optional temperature measurement capability, users can monitor the thermal performance of components directly during tests.

On the other hand, the E4351B model enhances flexibility with a modular design, offering an extensive range of input and output configurations. This instrument is particularly well-suited for automated test systems, providing the ability to connect multiple devices and manage them seamlessly. Its high-speed switching technology enables quick toggling between channels, ensuring that large datasets can be acquired swiftly without compromising accuracy.

Both models employ advanced contact technology, which minimizes the potential for signal degradation, ensuring that users receive reliable data with minimal noise interference. This feature is crucial in applications where signal integrity is paramount, such as in research and development or quality assurance processes.

Enhanced user interfaces simplify operations for both novice and experienced technicians. The built-in touchscreen and intuitive navigation allow for easy setup and operation, significantly reducing the learning curve. Furthermore, the comprehensive software support provided by Agilent facilitates integration with various programming environments, allowing for custom test sequences tailored to specific needs.

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In summary, Agilent Technologies’ E4350B and E4351B models are distinguished by their precision, flexibility, and robust performance. Their advanced features and user-friendly design make them suitable for a wide variety of applications, from routine testing to complex R&D projects. By leveraging modern switching technologies, these systems set a high standard for electronic measurement, aiding engineers in developing reliable electronic solutions.